Archive Brainteaser answer By System Administrator 16th May 2007 12:00 am 16th December 2015 3:40 am The answer to the Brainteaser is….13458 is exactly twice 6729 Visit the UK’s dedicated jobsite for engineering professionals. Each month, we’ll bring you hundreds of the latest roles from across the industry. View jobs News Bone detector News Teaching aids News Maple is used for micro motor design at Rotalink News Civil & structural £8bn offered for Hanson News 125 years of quality from Christian Bauer Latest ArticlesComments News Aerospace AutoFlight to bring eVTOL airtaxis to Europe News Renewables ScotWind offshore wind projects announced Opinion Policy & business Patent Box could unlock IP from AI In-depth Automotive Pressing ahead with sustainable composites Post a comment Name Email Cancel reply Threaded commenting powered by interconnect/it code. All comments are moderated. Click here for our guidelines.